On Sept. 1, the Navajo Department of Health continued the Navajo Nation’s 32-hour partial weekend lock downs and daily curfew hours through the month of September to help control and prevent the spread of COVID-19 on the Navajo Nation.On Sept. 1, the Navajo Department of Health continued the Navajo Nation’s 32-hour partial weekend lock downs and daily curfew hours through the month of September to help control and prevent the spread of COVID-19 on the Navajo Nation.